74AUP1G17 Philips Semiconductors, 74AUP1G17 Datasheet - Page 15
74AUP1G17
Manufacturer Part Number
74AUP1G17
Description
Low-power Schmitt-trigger buffer
Manufacturer
Philips Semiconductors
Datasheet
1.74AUP1G17.pdf
(20 pages)
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Philips Semiconductors
16. Application information
9397 750 14677
Product data sheet
The slow input rise and fall times cause additional power dissipation, this can be
calculated using the following formula:
P
Average I
Fig 12. Average I
ad
P
f
t
t
I
i
r
f
CC(AV)
ad
= input frequency (MHz);
= input fall time (ns); 90 % to 10 %;
= input rise time (ns); 10 % to 90 %;
= f
(1) Positive-going edge.
(2) Negative-going edge.
= additional power dissipation ( W);
i
= average additional supply current ( A).
(t
CC
r
differs with positive or negative input transitions, as shown in
I
CC(AV)
CC
as a function of V
+ t
(mA)
I
CC
f
1.2
0.8
0.4
Rev. 01 — 26 July 2005
0
0.8
I
CC(AV)
)
V
CC
1.8
CC
where:
2.8
Low-power Schmitt-trigger buffer
V
(1)
(2)
CC
001aad027
(V)
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
3.8
74AUP1G17
Figure
12.
15 of 20